[SOLVED]Openhab 3 timer cancel

Setup, Configuration and Use Scripts & Rules
1

The OH 3.3.0 Actions Timers documentation example code uses

myTimer?.cancel()

but most DSL examples use

myTimer.cancel()

What is the correct usage and what is the difference?

2

Both are correct. The myTimer?.cancel() is a short hand way to write

if(myTimer !== null) myTimer.cancel()
3

@rlkoshak Thanks